[PLUG] Junkbuster Web proxy???

[Will Andrews]

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On Mon, Apr 09, 2001 at 03:41:20PM -0500, Chris McNett wrote:
> I haven't heard of that one, but you might be able to use the libraries'
> proxy server used for accessing Purdue databases.
>=20
> How will that help with ResNet problems, though?

Well, if you think about how the web connections will be made via the
proxy.. a simple map of the network will help a bit.

Resnet -\		           /-- Resnet T3 (Resnet only)
	|- NOC at TCOM/MATH bldg --|--- OneCall/Abilene T3 (all nets)
	|- OC12/GE internal net  --|--- Wintek T1 (all nets)
Campus -/		           \-- Campus T3 (Campus only)

So, say you're on the Resnet side.. you see this:

 2  cisco-tel3-242.tcom.purdue.edu (128.210.242.24)  0.658 ms  0.607 ms 0.8=
52 ms
 3  500.Serial12-0-1.GW5.CHI6.ALTER.NET (157.130.113.197)  77.295 ms 142.58=
3 ms  140.859 ms
 4  so-4-0-0.XL1.CHI2.ALTER.NET (152.63.64.158)  137.776 ms  113.841 ms  11=
8.022 ms

Now you set your proxy to webproxy.purdue.org... you see this:

 2  cisco-tel-242.tcom.purdue.edu (128.210.242.22)  1.367 ms  1.543 ms 1.96=
3 ms
 3  Serial3-1-0.GW1.IND1.ALTER.NET (157.130.101.105)  4.174 ms  5.166 ms 4.=
793 ms
 4  121.at-2-1-0.XR1.CHI4.ALTER.NET (146.188.208.170)  7.655 ms  8.091 ms  =
7.459 ms

Now let's say you're using Abilene.  You'll see this:

(Resnet:)
 2  cisco-tel3-242.tcom.purdue.edu (128.210.242.24)  0.702 ms  0.830 ms 0.7=
08 ms
 3  cisco-tel-242.tcom.purdue.edu (128.210.242.22)  0.997 ms  0.831 ms 0.92=
7 ms
 4  abilene.tcom.purdue.edu (192.5.40.10)  6.127 ms  6.980 ms  5.870 ms

(Campus:)
 2  cisco-tel-242.tcom.purdue.edu (128.210.242.22)  1.183 ms  1.087 ms 1.47=
2 ms
 3  abilene.tcom.purdue.edu (192.5.40.10)  7.004 ms  6.759 ms  7.522 ms
 4  abilene-charlie.gw.ncsa.edu (141.142.11.245)  10.475 ms  10.031 ms 11.5=
76 ms

So to relieve your Resnet problems (at least with WWW), you set your
proxy to webproxy.purdue.org.. which sends the actual requests to the
proxy, which sends it out and receives over the Campus T3.  It's
effectively a no-op for Abilene/OneCall links, but hey...

--=20
wca

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